Have you been to Arstechnica, Phoronix, and The Register? Browse their headlines and you'll see a 12-24 hour preview of what's going to show up on /.
I've never heard of Phoronix, and since Ars came to be, I've considered it a good companion to Slashdot. As for El Reg, their stories used to be a daily thing on the front page here, but I rarely see them referenced anywhere anymore.
15 years ago, Slashdot was a very good source of timely tech news. They'd have news before CNet's news.com did. It's slipped a little; now most of the stories are at least a day old and have been reported in many other places. Here's the thing, though. Slashdot is a news aggregator. People submit links to things that are reported elsewhere. Even long ago, it was rare that any news "broke" on Slashdot. That simply isn't how this site works.
The web has evolved to become a far more real-time medium than it used to be. When I started on Slashdot, things like Facebook, Twitter, and reddit didn't exist. There were no smartphones, there were no apps, "going viral" wasn't a thing. Now a lot of people get their news in a massively crowdsourced/swarmed manner through social sites and apps, so by the time anything gets here it's bound to be "old news" to a large part of the audience.
Slashdot still offers a unique enough community that I keep visiting every day, even if the news is a bit stale.